Merge "Revert "Make FirstTarget treat HostCross separately from Host""

}

// FirstTarget takes a list of Targets and a list of multilib values and returns a list of Targets

// that contains zero or one Target for each OsType and HostCross, selecting the one that matches

// the earliest filter.

// that contains zero or one Target for each OsType, selecting the one that matches the earliest

// filter.

func FirstTarget(targets []Target, filters ...string) []Target {

	// find the first target from each OS

	var ret []Target

	type osHostCross struct {

		os        OsType

		hostCross bool

	}

	set := make(map[osHostCross]bool)

	hasHost := false

	set := make(map[OsType]bool)

	for _, filter := range filters {

		buildTargets := filterMultilibTargets(targets, filter)

		for _, t := range buildTargets {

			key := osHostCross{t.Os, t.HostCross}

			if _, found := set[key]; !found {

				set[key] = true

			if _, found := set[t.Os]; !found {

				hasHost = hasHost || (t.Os.Class == Host)

				set[t.Os] = true

				ret = append(ret, t)

			}

		}